Newts don't chew their food so item must fed must not be too big to swallow whole. They can eat a whole range of insects like flies and grasshoppers that you can catch or grow yourself. Mealworms would be welcomed. Keep up the variety, newts don't like a steady diet of any one thing.
Newts, just like the rest of the amphibians similar to them, tend to eat a diet high in insects. Thus it is recommended that you feed a newt assorted types of insects, such as crickets.
